Quinnipiac University conducted a survey of 919 Iowa likely voters between Jan 25 and Jan 31, 2016. Respondents were contacted by either Cellphone or Landline and instructed by a live operator. The results of this poll were released on Feb 1, 2016.
Results were provided for the only publicly acknowledged question.
Question 3 | PreferenceView Matchup
If the Democratic caucus were being held today, and the candidates were Hillary Clinton, Martin O'Malley, and Bernie Sanders, who would you support? (If undecided) If you had to choose today, would you support Clinton, O'Malley, or Sanders?
This question was presented to 919 likely voters from Iowa who were contacted in some undisclosed fashion. The margin of sampling error is ± 3.2%.
The question wording was provided by Quinnipiac University.